PostHog/posthog-js posthog-js@1.409.3

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1.409.3

Patch Changes

• #4312 4729871 Thanks @darkopia! - Fix hosted (external) surveys with URL prefill: the auto-submitted response now includes caller-provided event properties (extra URL query params), and a later manual submit no longer clears the prefilled answer from the partial-response merge.
  (2026-07-31)